Switching carriers or using a different SIM card on your iPhone doesn’t have to be complicated. If your device is SIM-locked, ...

How to lock an iPad One and done You can lock any iPad at any time by pressing the top (Sleep/Wake) button. You'll have to unlock it again if you've set up a passcode, Touch ID, and/or Face ID.

This carrier now has a lock system that prevents you from using Developer Options Cricket's new Device Unlock app is here to make things a bit more complicated.

Having a carrier-locked phone can make it difficult if you want to sell your phone or move carriers. Here are a few ways to tell the status on your iPhone.